Soap-dispensing apparatus



Feb. 23 1926.

L. KOOPERSTEIN SOAP DISPENSING APPARATUS Filed April 5, 1925 patentedFeb.

. UbllTEll STATES 1,573,970 PATENT orrica.

LOUIS KOOPERSTEIN, OF NEW YORK, N. Y., ASSIG'I-IOR TO WEST DISINFEGTINGCOM- PANY, 03: NEW YQRK, N. 1 A COPJPORATIOI'I OF NEW YORK.

SOAP-DISPENSING APPARATUS.

Application filed April 3, 1925.

ranged that the soap flows by gravity to the valve. The ob ect of theinvention is to provide a simple type of apparatus of this nature,wherein all. of the valve members may as a single unit be assembled inand removed from the valve casing, and a double closure is provided bythe valve element to prevent leakage from the reservoir through thevalve.

The invention will be understood by reference to the accompanyingdrawing in which Figure 1 is a plan view of an embodi ment of theinvention, and

Figure 2 is a fragmentary vertical section through the same, the valvemembers 39 being shown in detail.

Figure 3 is a transverse cross section on the line 3 3, Figure 2.

The embodiment of the invention illustrated in the drawing consists of acylindrical container 1 for the liquid soap, the latter being providedwith an intake 2 normally closed by a plug 3 which may be threaded inplace or held by friction, as desired. The base of container 1 fitswithin a cup 1 formed as an upward extension of the valve body 5.

The valve body is fo med with a rear extension 6 merging into a bracket7, the latter being adapted to be secured upon a wall or other verticalsupport 8.

The valve body 5 is formed with two longitudinal chambers 9 and 10, thelatter being of the greatest diameter. Chamber 9 'connnunicates viaopening 11 with the base oi container 1, which is open. so that theliquid soap may flow, by gravity, into said chamber. Chambers 9 and 10are normally shut otl' one from the other by a piston 12, this pistonbeing carried by one end of a push rod 3", the latter carrying a thumbpiece 14. Push rod 13 is guided in its move- Serial No. 20,344.

ments by a block 15 which closely fits within chamber 10 and which isheld in place by means of a plug 16 which is threaded within saidchamber. lVithin chamber 10 and rearwardly of block 15 is a valve sleeve17. Sleeve 17 is formed with a peripheral, centrally disposed, c.-annel18 which communicates with a duct 19 leading to an inner circumferentialchannel 20 formed in the said sleeve.

Push rod 13 is formed with a duct 21, which, when the parts are at rest,has an inlet at the rear of channel 20 of valve sleeve 17 and an outletin front of channel 20, both inlet and outlet being closed by the innerwall of said sleeve. Piston 12 is normally pressed against a washer 22by means of a coiled spring 23 disposed within chamber 9. The valve body5 is formed with a noz- 210 2 1 having an opening 25 which communicateswith circumferential channel 18 formed in the valve sleeve 17.

In the operation of the device, rearward movement of push rod 13) willcarry piston 12 rearwardly until its forward end is in advance of thewall a of opening 11, whereupon soap will flow in advance of the piston.In this position of the parts, soap would be permitted to flow directlyfrom container 1 through the nozzle 25 were it not for the fact that theoutlet of duct 21 is closed by the wall of valve sleeve 17 rearwardlv 0+inner channel 20. lVhen the push rod is released, spring 18 will actupon piston 12, first, to close the opening in wall a and thence toforce the soap rearwardly of the piston through duct 21, which ismomentarily opened by coming into communication with channel 20, thesoap thence passing into duct 19, channel 18, out of the nozzle opening25.

While, for convenience of illustration, port 19 is shown immediatelyabove the nozzle opening, this position of the parts is not required, inview of the provision of channel 21.

It will be seen that all of the valve elements are removable as a unitfrom the easing by retracting screw plug 16, and that wash r 22 may beexpanded by screwing the plug inwardly. It will also be seen that theoutlet 20 is maintained closed by the push rod except when an operationof the rod momentarily establishes communication be tween duct 21 andchannel 20.

Various modifications may be made in-the embodiment of the inventionherein, shown without departing from the spirit of the invention, what Iclaim and desire to secure by Letters Patent being as follows 1. In soapdispensing apparatus, a valve body, two longitudinally extending cham=bers formed in said valve body, a piston normally disposed between thetwo chambers, a spring acting upon said piston, a push rod formed with aduct having an inlet and an outlet at the longitudinal surface of therod, said rod being connected to the piston, a valve sleeve in thesecond chamber and attording a guiding member for the push rod, saidvalve sleeve having a duct normally intermediate the inlet and outlet ofthe push rod duct, a nozzle in the valve body, and a communicationbetween said nozzle and the valve sleeve duct.

2. In soap dispensing apparatus, a valve casing provided with twolongitudinal chambers, the second chamber being of greater diameter thanthe fil'StCliitlllbet, a PISLOH eiisposed between the two chambers andnormally shutting them off irom each other, a

push rod engaging the piston and formed with a duct having an inlet andan outlet on the outer surface of the rod, a valve sleeve within thesecond chamber and having a longitudinal aperture to receive the pushrod said valve sleeve also having a duct extending transverselytherethrough, a noz zle formed in the valve casing and communicatingwith the valve sleeve duct, and a screw plug threaded within said secondchamber whereby the said valve elements may as a unit be secured withinand removed from the casing.

3. In soap dispensing apparatus, a valve casing provided with twolongitudinal chambers, a piston normally disposed between the twoehan'ibers, a push-rod formed with a duct having an inlet and an outletin said rod, the said rod being connected in the piston, a valve sleevesurrounding said rod and the duct, a nozzle in the valve body, and

a communication between said nozzle and he valve sleeve duct.

In testimony whereof, I have signed my name to this specification.

LOUIS KOOPERSTEIN.

